Shenzhen stock code "112" starts with the small and medium-sized board, "111" starts with the main board, and "3" starts with the Growth Enterprise Market; At the beginning of the Shanghai stock code "6", all Shanghai stocks are main boards.

The code of Shanghai B shares starts with 911, the code of new share subscription starts with 731, and the code of rights issue starts with 711.

Shenzhen B-share code starts with 211, new share subscription code starts with 11, and rights issue code starts with 181.

warrant: Shanghai stock market starts with 581, and Shenzhen stock market starts with 131.

During the formation of a theme stock or a two-hot plate, the following characteristics will be formed on the disk surface:

1. The trading volume of individual stocks or the whole plate increases obviously and continuously.

2. The stock price fluctuates continuously, and it often closes at the end of the market. This phenomenon also occurs at the opening and mid-session.

3. With the increase of turnover rate, the stock price trend of a certain sector began to turn from weak to strong. When the market falls, individual stocks and sectors do not fall, while the market rises, and the sector gains more than the market, which may become a hot spot in the market.

Extended information

Industry sector classification: The China Securities Regulatory Commission has a classification standard for listed companies, which is official. Every quarter, more than 51% of the company's business is required to be classified into the industry to which the company belongs. This content can be found on the website of the China Securities Regulatory Commission on the industry classification of all companies in the last quarter.

these include: a agriculture, forestry, animal husbandry and fishery; B mining industry; C manufacturing industry; D electricity, heat, gas and water production and supply industries; E construction industry; F wholesale and retail trade; G transportation, warehousing and postal services; H accommodation and catering industry;

I information transmission, software and information technology services; J financial industry; K real estate industry; L leasing and business services; M scientific research and technical services; N Water conservancy, environment and public facilities management; O Resident services, repairs and other services; P education; Q health and social work; R Culture, sports and entertainment; S synthesis;

***19 categories, and secondary 91 categories. (Refer to the Guidelines for Industry Classification of Listed Companies (revised in 2112))

Conceptual plate classification: This is a variety, and there is no unified standard. Commonly used conceptual plate classification includes regional classification: such as Shanghai plate and xiong'an new area plate; Policy classification: new energy sector, free trade zone sector, etc.;

time to market classification: sub-IPO, etc. Investor classification: social security heavy plate, heavy plate of foreign-funded institutions, etc. Index classification: Shanghai and Shenzhen 311 plates, SSE 51 plates, etc.; Hot economy classification: network finance plate, internet of things plate, etc. According to the classification of performance: blue-chip plate, ST plate and so on, there are endless categories of concept plates!

Baidu Encyclopedia-plate stock